string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%A6%E9%97%B4%E5%B7%A5%E4%BD%9C%E7%9A%84%E4%B8%8D%E8%B6%B3%E4%B9%8B%E5%A4%84 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
车间工作的不足之处
